JPH01162455A - Pass setting control system for digital exchange - Google Patents

Abstract

PURPOSE:To execute the exchanging processing of wide band data without any change by writing exchanging control information of the number only designated to a control memory with band extending identifying information and executing the access control of a channel memory based on these. CONSTITUTION:When a calling to occur at a communication device 21 is a wide band data one to need the necessary number of the basic exchanging processing unit of a digital exchange 6, the device 21 transmits the band extending identifying information to the exchange 6 in addition to opponent identifying information. When a central control part 16 receives the band extending identifying information through an extension circuit 3 and a main memory 17 and recognizes this in the exchange 6, respective pieces of exchanging control information for a call are successively written into respective memory areas for the number only designated by the band extending identifying information assigned for the calling in response to the opponent identifying information. Respective pieces of the exchanging control information of a memory 18 are read, and by this, the access control of a channel memory 14 is executed. Thus, the exchange 6 executes the exchanging with the exchanging basic unit as the exchanging processing unit only for the designation number times of the basic exchanging processing unit.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a path setting control method that sets paths that are an integral multiple of the basic exchange processing unit, and aims to enable broadband data exchange processing without changing the basic exchange processing unit. , a digital exchange that writes exchange control information in a control memory under the control of a central control unit that responds to destination identification information from a communication device, and sets a path corresponding to the destination identification information in a communication path memory using the exchange control information. In this step, the communication device provides destination identification information and band extension identification information to the central control unit of the digital exchange, and under the control of the central control unit, basic exchange is performed from the address allocated to the control memory by the amount of the band extension identification information. Path setting information for each processing unit was continuously written, and the exchange control information was used to set paths for each exchange processing unit that was an integer multiple of the basic exchange processing unit in the communication path memory.

[Industrial application field]

The present invention relates to a path setting control method capable of setting a path in response to a request for exchange processing of a band exceeding a basic exchange processing unit.

In digital private branch exchanges (hereinafter abbreviated as digital PBX) and the like, there is a growing need to transmit data that exceeds the conventional exchange transmission band. for example,
This is high-speed file transfer between hosts and host computers, and image data transfer in an electronic conference system.

[Conventional technology]

FIG. 8 shows a standard configuration of a conventional digital PBX and a communication device connected thereto. In this figure, 1
1 is a digital PBX, and 21 is a communication device. 31
is a line connecting the digital PBXII and the communication device 21. 41 is a dedicated line connected to a station or the like.

Digital PBXII has an extension circuit 13 and a call path memory 1.
4. Its main parts consist of a central office line trunk (or trunk line trunk) 15, a central control unit (CC) 16, a main memory (MM) 17, a control unit memory 18, an incoming highway 193, an outgoing highway 19□, and a path 193. be done. The communication device 21 also includes a data transfer unit 22, a central processing unit (CPU) 23,
Its main parts are composed of a main memory (MM) 24, a multiple ink face section 25, and paths 263 and 26 degrees.

In this system configuration, when a call is made to the communication device 21, the central processing unit 23 generates a selected numeric number (destination address data), and the multiple ink face unit 25
, transfers the selected digit number to the digital PBχ11 via line 31 under individual line signaling. The central control unit 16 receives this selected numeric number via the extension circuit 13 and writes a corresponding read address into the control memory 18. The communication data from the control memory 18 is read using the read address of the control memory 18, and is transferred to the destination via the trunk 15 along with the selected numeric number (exchange processing).

The exchange processing unit in such exchange processing has been set to a predetermined value, for example, 64 Kbps per line.

[Problem that the invention seeks to solve]

In the above-mentioned conventional exchange control method, since the exchange processing is performed only in the exchange processing unit set in advance as described above, the transmission speed does not exceed the exchange processing unit.
For example, as mentioned above, data (audio/
Data) can be exchanged using a digital PBX.

However, the transmission speed exceeding the exchange processing unit (several Mb
As for data (from PS's high-speed multiplex ink face), the digital PBX does not have that much transmission band, so it is not possible to exchange such data using the conventional method.

The present invention was created in view of such problems, and an object of the present invention is to provide a path setting control method for a digital exchange capable of exchanging broadband data without changing the basic exchange processing unit.

Means for Solving Problem C] FIG. 1 shows a block diagram of the principle of the present invention. In this figure, 21 is a communication device, and 4 is a line that connects the communication device 21 to the digital exchange 6 and has a transmission speed faster than the basic exchange processing unit of the exchange 6. The communication device 21 is configured to be able to send out band extension identification information in addition to destination identification information when making a call. The digital exchange 6 receives destination identification information and band extension identification information from the communication device 21 via the main memory 17 via the extension circuit 13, and the central control unit 16 receives the band extension identification information. When the call is recognized, exchange control information for the call is written in each of the number of contiguous memory areas designated by the band extension identification information allocated to the exchange process in the control memory 18 in response to the call. It is composed of

A control program for effecting this control is stored in the main memory 17, and its execution is caused in the central control unit 16.

The present invention is configured such that each piece of exchange control information written in the control memory 18 as described above is used for path setting processing to the communication path memory 14 by the central processing section 16.

[For production]

When the call that occurs to the communication device 21 is broadband data that requires the required number of basic exchange processing units of the digital switch 6, the communication device 21 sends out band extension identification information in addition to the conventional destination identification information. .

Information for controlling these exchanges is transmitted to the digital exchange 6 via the line 4. The central control unit 16 receives the band extension identification information via the extension circuit 13 and the main memory F, and upon recognizing this, in response to the destination identification information, the central control unit 16 allocates it to the control memory 18 for the call origination according to the conventional method. Further, each piece of switching control information for the call is sequentially written into each of the number of consecutive memory areas specified by the band extension identification information.

Then, the central control unit 16 reads each piece of exchange control information from the control memory 18 and controls access to the communication path memory 14 based on this information. As a result, the digital exchange machine
The exchange processing unit is operated as an exchange processing unit of the specified number times the basic exchange processing unit, that is, wideband data is exchanged.

〔Example〕

An embodiment of the present invention will be explained based on the system configuration shown in FIG. The basic exchange processing unit of the digital PBX is 6
It is assumed to be 4Kbps.

In addition to the conventional processing functions, the communication device 21 of the system shown in FIG. 8 has additional functions shown in the processing flow of FIG. 2.

This transfers data from the communication device 21 to the digital PBX.
This is a means for notifying the digital exchange 11 of a request to transmit to a destination in a predetermined multiple, for example, six times the basic exchange processing unit of II, that is, in exchange processing that provides consistency in transmission speed. That is, once the telephone number of the person with whom you wish to communicate is determined in the communication device 21 (8 in FIG.
1), the dial pulse (DP) data is created (
33) in Fig. 2, the band to be used at that time is determined, and the band is determined by the digital PBXII exchange processing unit (for example,
64 Kbps) (N of 33 in Figure 2),
The dial pulse is sent out as described below (37 in FIG. 2).

If it exceeds the exchange processing unit of the digital PBXII (Y in 83 in Figure 2), create the band information in the second
34) in the figure, create a DP data for this information and the delimiter pulse (35 in Figure 2). The delimiter pulse is used between the telephone number and the bandwidth information in the dial pulse format as a means to enable the receiving side to distinguish between the telephone number and the bandwidth information since both are transmitted in the dial pulse format. This is done in the form of a dial pulse. After adding this DP data to the other party's DP data (
86) in FIG. 2, dial pulses are sent out based on these DP data (36 in FIG. 2). FIG. 3 shows information for switching control that is transmitted from the communication device 21 to the digital PBχ11 via the line 31 when this means is activated. This information consists of the telephone number of the other party, delimiter information (delimiter pulse), and band information. The delimiter information and the 1# area information are examples of the band extension identification information described in the "Means for solving problems" and "Operations" sections.

This information is stored in the telephone number of the other party (hereinafter abbreviated as the other party's number) in the time slot TSO of a multi-frame (see FIG. 4) formed under the conventional method on the line 31.

) is transferred bit serially following the destination number using one signal pinto (to bit). T.S.O.
8 frames constitute one multiframe, and the signals for 30 channels, each of which is formed into one frame of 5×6 = 30 bits shown in the shaded area in Fig. 4, are transferred in this one multiframe. The fact that it is a bit is the same as before.

In this way, the destination number and band information of information transferred using multiframe signal bits are not only the dial number (see Table 1) transmitted as dial pulses, but also the delimiter pulses. , for example, the number of dial pulses is 13 (see Table 1I) and is transmitted via the above-mentioned signal bits.

As described above, each dial pulse transmitted from the communication device 21 to the digital PBXII via the line 31 is received and processed by the extension circuit 13.

The reception process in the extension circuit 13 is performed according to the process flow shown in FIG. Steps S1 to SIO, S40, S80, and S81 of the processing flow are necessary for transferring the number code to the central control unit (CC) 16 in the conventional system. Steps S1 to S3
is the reception process of each dial pulse, S4 is the analysis process of the received pulse, S5 to S7 is a pulse waiting loop for receiving each dial pulse, and S8 to SIO are the confirmation of a normal partner number, the generation of a number code, and the code central control unit 1
6 shows the transfer process to 6. S40 indicates abnormal processing when the number of digits is out of the specified range, and S80 and S81 indicate abnormal processing when the number of digits in the other party's number is out of the specified range.

In addition to these processes, processes from steps 321 to S30 are further added in the present invention.

Step S21 is to check whether or not the band information flag is on. If this flag is not on, the delimiter pulse has not been received (N in S23), and if the number of digits is not outside the specified range ( (N of S4), the CPU enters a pulse waiting loop (S5 to S7) to perform various processes for receiving dial pulses.

As the reception of each dial pulse progresses and it is determined that a delimiter pulse is being sent following the destination number (Y in S23), the band information flag is turned on (S2' 4). When the flag is turned on, if a dial pulse is still being received, the pulse is received via a pulse waiting loop, and with the flag on as a condition (Y in S21), the process begins receiving band information.

Loops for that purpose S22, S5, S6, S2, S3, S
21 and S22, if the number of digits of the band information is 3 or more, the step S40 ends abnormally, but otherwise, a state with no dial pulse occurs (S
5, N), if there is also an output from the pause monitoring timer (S7, Y), the reception of the information for the exchange control of the present invention described above is completed.

And the number of digits of the destination number is normal (38 Y),
If the band information flag is also on (Y in S25), it is determined whether the received band information is two digits (S26). If the determination is negative, 32B
, 329 will be abnormally terminated, but if it is affirmative, the code information creation process for the band information is performed (S27), and the code information creation process for the destination number is performed (S9), and the band information flag is turned off. 530), and transfers the created number code information and band code information to the central control unit 16 (SI
O).

The central control unit 16 analyzes the code received from the extension circuit 13 (31 in Figure 6), performs outgoing route determination processing for the other party (32 in Figure 6), and then adds band code information to the received code. (33 in Figure 6)
(Y), Addresses for reading the communication path memory 14 are sequentially written to each of the number of addresses determined by the band code information, counting from the first address allocated to the control memory 18 based on the analysis result.

If the address of this control memory 18 is read by the central control unit 16 and the address is read from the channel memory 18, the PBXII can exchange only the band code information times the normal exchange processing unit (for example, 64 Kbps). This is equivalent to a switch that performs switching processing in units of processing. For example, as shown in FIG. The communication information C2D, E, F, G, and H transmitted using time slots t:l to t8 are sequential write counter 1.
41, the address #3 to address #8 of the communication path memory 14 are continuously written. The central control unit 16 receives the number code and band code from the extension circuit 13 for each of the written communication information, and reads out the communication path memory 14 at each timing corresponding to the time slot on the outgoing highway 192 of the communication path memory 14. , write the address from which the communication path 14 is to be read. That is, address #3 is used at read timings t and l, address #4 . ... + tn-5 has address #8
is written. Then, if the central control unit 16 reads the control memory 18 and reads the communication path memory 14 according to the contents, the communication information C ,D,
E, F, G, and H are transmitted sequentially. In other words, exchange processing can be performed in six times the basic exchange processing unit.

In the above embodiment, a dial pulse type signal was explained, but the present invention can be implemented with other signal formats, and as is clear from the above description, the digital PBX is connected to a digital switching network. This can naturally be implemented at each exchange point within the system. Further, it can be easily applied to a common line signaling system.

〔Effect of the invention〕

As described above, according to the present invention, a digital exchange can be operated in exchange processing units that are an integral multiple of the basic exchange processing unit without changing the basic exchange processing unit of the digital exchange. It also has easy expandability to common channel signaling systems.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle configuration of the present invention, FIG. 2 is a diagram showing a process flow for line support of the communication device 21, FIG. 3 is a diagram showing an example of information for switching control, and FIG. Frame configuration diagram, Figure 5 is a diagram showing the processing flow for line correspondence in the extension circuit, Figure 6 is a diagram showing the processing flow of the central control unit, Figure 7 is an expanded explanatory diagram of the basic exchange processing unit, and Figure 8 The figure is a digital PB
FIG. 2 is a standard configuration diagram of X and a communication device. In Figures 1 and 8, 4.31 is the line, 6 is the digital exchange (digital PBXI 1), 1
3 is an extension circuit, 14 is a communication path memory, 16 is a central control unit, 17 is a main memory, 18 is a control memory, and 21 is a communication device. Patent applicant: Fujitsu Limited 71. Processing 70 of the return of the communication device 21 to the prisoner - Figure 2 Crossing West! JLL Wholesaler's R Meno I Information 4th Edition Figure 3 Line Flow Line Configuration Diagram Figure 4

Claims (2)

[Claims] (1) Central control unit (16) that responds to destination identification information transmitted from the communication device (21) via the line (4)
writes exchange control information for the communication path memory (14) into the control memory (18), and the central control unit (16)
In the digital exchange (6), the communication device (21) sets a path corresponding to the destination identification information in the communication path memory (14) based on exchange control information read from the control memory (18) under the control of the communication device (21). from the line (4) with a faster transmission speed than the basic exchange processing unit of the digital exchange (6).
) The destination identification information and band extension identification information transmitted via the central control unit (
16), and the central control unit (16) responds to the destination identification information.
The number of basic exchange processing unit paths specified by the band extension identification information is transferred from the address allocated to the control memory (18) to the communication path memory (14).
Continuously write exchange control information for setting the bandwidth, and use each piece of written exchange control information to write exchange processing units that are equal to the bandwidth expansion information times the basic exchange processing unit in the communication path memory (14). A path setting control method for a digital exchange characterized by setting a path. (2) The destination identification information and the band extension identification information are both in dial pulse format, and the band extension identification information is obtained from a band extension pulse train and a delimiter pulse train interposed between this pulse train and the partner identification pulse train. A path setting control method for a digital exchange according to claim 1, characterized in that: